Starch-separator



(No Model.)

T. A. J'EBB.

STARGH SEPARATOIL Patented Nov. 1 ,1881.

. wmg.

bless N PETERS. Phalomhcgnphcv, Wuhing'bn. [1Q

Nrriin STATES ATENT amen.

THOMAS A. JEBB, OF BUFFALO, NElV YORK.

STA'RCH-SEPARATO R.

SPECIFICATION forming part of Letters Patent No. 249,056, dated November1, 1881.

Application filed October 4, 1881.

To all whom it may concern Be it known that I, THOMAS A. JEBB, of thecity of Buffalo, in the county of Erie and State of New York, haveinvented new a"nd useful Improvements in Starch-Separators, of which thefollowing is a specification.

This invention relates more particularly to that class of separatorswhich are employed for separating the crude starch from the husk andbran ot' the ground grain, and which consists, essentially, of a shakingsieve covered with bolting-cloth,through the ineshesof which'tlie starchand water are sifted, while the coarse refuse, such as bran and huskspass overlhe tail end of the bolting-surface.

The object of my invention is to render these separators more convenientin their operation and more durable and my invention consists of thepeculiar construction of the separatingsieve, whereby the bolting-clothcan be turned end for end, thereby causing the parts of thebolting-cloth which are exposed to the greatest and least wear to changeplaces in the sieveframe when this becomes desirable; also, of meanswhereby the mate: ial is prevented from entering between the severalsieve-frames, and of the means whereby the sieve is supported andvibrated, as hereinafter fully set forth.

In the accompanying drawings, Figure l is asideelevationofmyimprovedseparator. Fig. 2 is a top-plan view, and Fig. 3 is a longitudinalsection, thereof. Fig. 4 is a crosssection, onan enlarged scale, in lineor .r, Fig. 2; and Fig. 5 is a fragmentary longitudinal section of thesieve.

Like letters of reference refer to like parts in the several. figures.

A represents the rectangular sieve-frame, and avibratiug arms, whichsupport both ends of the frame. The arms a maybe secured with theirlower ends to the floor and be made of elastic material, which permitsthe necessary flexion of the arms, or they may be pivoted to the floor,as may be preferred. They are connected with the sieve-frame by pivots,which enter sockets a, secured to the sides of the sieve-frame. Thelatter receives motion by a connecting-rod, b, from an eccentric orcrank on a driving-shalt, B.

0 represents a series of narrow rectangular frames arranged side by sidein the main frame (No model.)

A, and having their under sides covered with bolting-cloth. These framesG are each composed of side pieces, 0, and end pieces, 0, which restupon a rabbet or shoulder, (1, formed on the inner sides of the mainframe A. The bolting-cloth is secured to the under sides of the sidepieces, 0, and to cross-pieces e, which are secured to the under side ofthe side pieces, 0, at a short distance from the end pieces, 0, leavingan opening, f, between each cross-piece c and the end piece, 0, throughwhich the coarse offal is discharged. The rabbet (l is cutaway at theproper places to make room for the crosspieces 0.

g is a plate or board extending across the bottom of the main frame atits head, below the frames 0, and closing the openings)" at the heads ofthe several frames 0, the cross-pieces e of the frames 0 restingagainstthe rear edge of the plate g, as clearly shown in Figs. 3 and 5.The outer faces, 0, of the cross-pieces c are preferably inclined orbeveled downwardly, and the rear edge of the plate 9 is correspondinglybeveled.

h are set-screws which work in threaded holes in the tail-piece of themain frame A, and which bear against the tail-pieces of the removablesieve-frames 0. By tightening the screws h the cross-pieces c arepressed against the head-board g, and the inclined faces of these piecesform a tight tit and prevent the removableframesfrombeingaccidentallylifted out of place when the machine is in operation.The rear face of the board 9 may be covered with a strip of rubber orother elastic material, and the rearfaceof thehead-board of the mainframe A may be similarly covered to form a tight fit between theremovable frames 0 and the main frame A. Upon loosening the screws h theframes 0 can be removed from the main frame or turned end for end,thereby bringing the former tail portion of the cloth to thehead of thesieve, and the head portion of the cloth to thetail.Asthewearoftheclothisgreateratthe head, wherethe material is fed uponthe cloth, than at the tail of the sieve, the wear is readily equalizedby reversing the frames from time to time. The frames 0 are made nowider than the strength of the bolting-cloth will permit, so that theboltin g-cloth will not sag or bag under the weightot' the materialresting thereon. The

side pieces of the frames 0 form intermediate supports for thebolting-cloth, and also serve to divide the material and prevent it fromworking to one side when the sieve is not perfectly level in thedirection of its width.

I represents the feed hopper or trough arranged over the head portion ofthe sieve, and extending across the entire series of removablesieve-frames 0, whereby theinaterial which issues from a slot in thebottom of the hopper is equally distributed over the entire width of thesieve.

J are covers or shields, which are fitttd over each pair of contiguousside pieces, 0, of the removable frames U underneath the feed-hopper,and which prevent the material which is discharged from the hopper fromentering between the side pieces of two contiguous frames. These coversare secured by set-screws j, or other suitable means, so that they canbe readily removed when the frames 0 are to be reversed.

K is a hopper or trough which is arranged underneath the sieve, andwhich receives the material which passes through the meshes of thesieve, and L is a trough which is arranged under the tail-openings f ofthe sieves and receives the coarse offal which escapes over the tail endof the bolting-surface.

m represents the water-pi pes arranged in the usual manner above thesieve, and which deliver sprays of water upon the bolting-surface,whereby the starch is washed through the meshes thereof.

It is obvious that although myimprovements are more especially designedfor use in starchseparators, they may be advantageously employed inother shaking separators.

I claim as my invention 1. The combination, with the main frame A,

side with bolting-cloth, and provided at each end with an opening, f,for the discharge of the coarse ofi'al, substantially as set forth.

4. The combination, with the main frame A, having a head-board, g, of areversible sieveframe, 0, covered on its under side with bolting-cloth,and provided at each end with an openiug,f, and cross'piece 6, adaptedto fit against the head-board g, substantially as set forth.

5. The combination, with the main frameA, provided with a headboard, g,having a beveled rear side, of a removable sieve-frame, 0, provided withcross-pieces 0. having beveled faces adapted to fit against the beveledrear side of the head-board g, and means whereby the frame 0 is securedin place, substantially as set forth.

6. The combination, with the removable sieve-frames O, of the protectingcovers or shields J, whereby the material is prevented from enteringbetween the frames, substatitially as set forth.

7. The combination, with the sieve-frame A, ofthe vibratingor rock armsa, supporting both ends of the sieve, substantially as set forth.

'1. A. JEBB.

Witnesses:

E. D. GRANT, WILLIAM T. J EBB.

